MAX4851H Maxim, MAX4851H Datasheet

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MAX4851H

Manufacturer Part Number
MAX4851H
Description
The MAX4851/MAX4851H/MAX4853/MAX4853H family of quad single-pole/single-throw (SPST) switches operates from a single +2V to +5
Manufacturer
Maxim
Datasheet
1.MAX4851.pdf (14 pages)
The MAX4851/MAX4851H/MAX4853/MAX4853H family
of quad single-pole/single-throw (SPST) switches oper-
ates from a single +2V to +5.5V supply and can handle
signals greater than the supply rail. These switches fea-
ture low 3.5Ω on-resistance with 40pF on-capacitance
or 7Ω on-resistance with 30pF on-capacitance, making
them ideal for switching audio and data signals.
The MAX4851/MAX4851H are configured with four
SPST switches and feature a comparator for head-
phone detection or mute/send key functions. The
MAX4853/MAX4853H have four SPST switches but do
not include a comparator.
For over-rail applications, these devices offer either the
pass-through or high-impedance option. For the
MAX4851/ MAX4853, signals greater than the positive
supply (up to 5.5V) pass through the switch without dis-
tortion. For the MAX4851H/MAX4853H, the switch input
becomes high impedance when the input signal
exceeds the supply rail.
The MAX4851/MAX4851H/MAX4853/MAX4853H are
available in the space-saving, 16-pin, 3mm x 3mm thin
QFN package and operate over the -40°C to +85°C
extended temperature range.
19-3471; Rev 0; 10/04
Pin Configurations and Typical Operating Circuit appear at
end of data sheet
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
USB Switching
Audio Signal Routing
Cellular Phones
Notebook Computers
PDAs and Other Handheld Devices
3.5 Ω Ω /7 Ω Ω Quad SPST Switches with Over-Rail
________________________________________________________________ Maxim Integrated Products
General Description
Applications
♦ USB 2.0 Full Speed (12Mbps) and USB 1.1 Signal
♦ Switch Signals Greater than V
♦ +2V to +5.5V Supply Range
♦ 3.5Ω/7Ω On-Resistance
♦ 30pF On-Capacitance (7Ω Switch)
♦ 150MHz -3dB Bandwidth
♦ 1.8V Logic Compatibility
♦ Low Supply Current
♦ Low 0.01nA Leakage Current
♦ Available in a Space-Saving 3mm x 3mm, 16-Pin
*EP = Exposed paddle.
MAX4851ETE
MAX4851HETE -40°C to +85°C 16 TQFN-EP*
MAX4853ETE
MAX4853HETE -40°C to +85°C 16 TQFN-EP*
COUT
Switching
TQFN Package
NO1
NO2
NO3
NO4
0.01µA (MAX4853)
5µA (MAX4851)
10µA (MAX4851H/MAX4853H)
PART
MAX4851H
MAX4851
3.5Ω
3.5Ω
3.5Ω
3.5Ω
V
Block Diagram/Truth Table
CC
3
-40°C to +85°C 16 TQFN-EP*
-40°C to +85°C 16 TQFN-EP*
TEMP RANGE PIN-PACKAGE
Signal Handling
COM1
IN1
COM2
IN2
COM3
IN3
COM4
IN4
CIN
Ordering Information
SWITCHES SHOWN
FOR LOGIC "0" INPUT
TRUTH TABLE
IN_
0
1
NO_
OFF
ON
CC
NO1
NO2
NO3
NO4
MAX4853H
MAX4853
Features
3.5Ω
3.5Ω
7Ω
7Ω
MARK
ABW
TOP
ACB
ACC
ABX
COM1
IN1
COM2
IN2
COM3
IN3
COM4
IN4
1

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MAX4851H Summary of contents

Page 1

... For the MAX4851/ MAX4853, signals greater than the positive supply (up to 5.5V) pass through the switch without dis- tortion. For the MAX4851H/MAX4853H, the switch input becomes high impedance when the input signal exceeds the supply rail. The MAX4851/MAX4851H/MAX4853/MAX4853H are available in the space-saving, 16-pin, 3mm x 3mm thin QFN package and operate over the -40° ...

Page 2

... Thin QFN (derate 20.8mW/°C above +70°C) ...1667mW Operating Temperature Range ...........................-40°C to +85°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C CONDITIONS V CC MAX4851 V = 5.5V IN_ I MAX4851H/MAX4853H MAX4853 , NO_ COM_ COM_ T = +25° ...

Page 3

... nal = 50Ω 1MHz, Figure 5 OFF 1MHz, Figure 5 ON MAX4851H/MAX4853H HIZ (V + 0.5V), V < 5V, Figure MAX4851H/MAX4853H HIZB 0.5V < 5V, Figure 39Ω 50pF, Figure 2 SKEW 39Ω 50pF, Figure 2 PD ...

Page 4

... Note 3: Guaranteed by design and characterization; not production tested. Note 4: ∆ ON(MAX) ON(MIN) Note 5: Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the specified analog signal ranges. Note 6: Off-isolation = 20log ( COM_ 4 _______________________________________________________________________________________ CONDITIONS ...

Page 5

... COM VOLTAGE (V) Signal Handling MAX4851/MAX4853 ON-RESISTANCE vs. COM VOLTAGE 3.5 3 +85° +25°C A 2.0 1.5 1 -40° COM VOLTAGE (V) MAX4851H/MAX4853H ON-RESISTANCE vs. COM VOLTAGE 3.5 3 +85° +25°C A 2.0 1.5 1 -40° 2.5 3.0 COM VOLTAGE (V) MAX4853 ON-RESISTANCE vs. COM VOLTAGE 5.5 5 +85° ...

Page 6

... ON-RESISTANCE vs. COM VOLTAGE 3.0V CC 7Ω SWITCH +85° +25° -40° 0.5 1.0 1.5 2.0 2.5 3.0 COM VOLTAGE (V) MAX4851H SUPPLY CURRENT vs. SUPPLY VOLTAGE +85° +25° -40° 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 SUPPLY VOLTAGE (V) TURN-ON/TURN-OFF TIME vs. SUPPLY VOLTAGE 60 3.5Ω ...

Page 7

Quad SPST Switches with Over-Rail (V = 3.0V +25°C, unless otherwise noted TURN-ON/TURN-OFF TIME vs. SUPPLY VOLTAGE 60 7Ω SWITCH OFF 10 0 ...

Page 8

... Quad SPST Switches with Over-Rail Signal Handling (V = 3.0V +25°C, unless otherwise noted TOTAL HARMONIC DISTORTION vs. FREQUENCY 1 0.1 0.01 10 100 1k FREQUENCY (Hz) (MAX4851/MAX4851H) COMPARATOR THRESHOLD vs. TEMPERATURE 1. 3.0V CC 1.08 V RISING CMPI_ 1.06 1.04 V FALLING CMPI_ 1.02 1.00 -40 -15 10 TEMPERATURE (°C) MAX4851/MAX4853 SWITCH PASSING SIGNALS ABOVE SUPPLY VOLTAGE ...

Page 9

... The MAX4851/MAX4853 devices feature over-rail signal capability that allows sig- nals up to 5.5V with supply voltages down to 2.0V to pass through without distortion. The MAX4851H/ MAX4853H enter high-impedance mode when the signal voltage exceeds V and return to normal operation ...

Page 10

Quad SPST Switches with Over-Rail Signal Handling MAX4851_ V CC MAX4853_ V CC COM_ NO_ V NO IN_ GND LOGIC INPUT C INCLUDES FIXTURE AND STRAY CAPACITANCE ...

Page 11

Quad SPST Switches with Over-Rail MAX4851_ MAX4853_ R GEN NO_ V GEN GND Figure 3. Charge Injection +5V 10nF COM1 IN_ CC MAX4851_ MAX4853_ NO1* GND MEASUREMENTS ARE STANDARDIZED ...

Page 12

... GND Figure 6. Comparator Switching Time R (Ω) ON PART NO1/NO3 NO2/NO4 MAX4851 3.5 MAX4851H 3.5 MAX4853 3.5 MAX4853H 3.5 12 ______________________________________________________________________________________ CAPACITANCE METER f = 1MHz Figure 5. Channel Off-/On-Capacitance Caution: Do not exceed the absolute maximum rat- Comparator ings because stresses beyond the listed ratings may cause permanent damage to the device. ...

Page 13

... Quad SPST Switches with Over-Rail TOP VIEW NO1 1 CIN 2 MAX4851 MAX4851H IN2 3 COM2 3mm x 3mm THIN QFN CONNECT EXPOSED PAD TO PC BOARD GROUND. Typical Operating Circuit MAX4851_ COM1 NO1 D+ IN1 3.5Ω DATA SOURCE (USB) ...

Page 14

... COPLANARITY APPLIES TO THE EXPOSED HEAT SINK SLUG AS WELL AS THE TERMINALS. 9. DRAWING CONFORMS TO JEDEC MO220 REVISION C. Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. ...

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